131Limits on amount of discount.
(1)Except where the Secretary of State so determines, the discount shall not reduce the price below the amount which, in accordance with a determination made by him, is to be taken as representing so much of the costs incurred in respect of the dwelling-house as, in accordance with the determination—
(a)is to be treated as incurred after 31st March 1974 (or such later date as may be specified in an order made by the Secretary of State), and
(b)is to be treated as relevant for the purposes of this sub-section;
and if the price before discount is below that amount, there shall be no discount.
(2)The discount shall not in any case reduce the price by more than such sum as the Secretary of State may by order prescribe.
(3)An order or determination under this section may make different provision for different cases or descriptions of case, including different provision for different areas.
(4)An order under this section shall be made by statutory instrument which shall be subject to annulment in pursuance of a resolution of either House of Parliament.